This patch has some whitespace warning when applying the patch.

Applying: ovn-isb: Interconnection southbound DB schema and CLI.
.git/rebase-apply/patch:171: new blank line at EOF.
+
warning: 1 line adds whitespace errors.

On Thu, Oct 31, 2019 at 2:48 AM Han Zhou <[email protected]> wrote:
>
> This patch introduces OVN_IC_Southbound DB schema and the CLI
> ovn-isbctl that manages the DB.
>
> Signed-off-by: Han Zhou <[email protected]>
> ---
>  .gitignore                 |    3 +
>  automake.mk                |   38 ++
>  debian/ovn-common.install  |    1 +
>  debian/ovn-common.manpages |    2 +
>  lib/.gitignore             |    3 +
>  lib/automake.mk            |   17 +-
>  lib/ovn-isb-idl.ann        |    9 +
>  lib/ovn-util.c             |   13 +
>  lib/ovn-util.h             |    1 +
>  ovn-isb.ovsschema          |  129 ++++++
>  ovn-isb.xml                |  582 +++++++++++++++++++++++++
>  tests/automake.mk          |    2 +
>  tests/ovn-isbctl.at        |  112 +++++
>  tests/testsuite.at         |    1 +
>  utilities/.gitignore       |    2 +
>  utilities/automake.mk      |    8 +
>  utilities/ovn-isbctl.8.xml |  148 +++++++
>  utilities/ovn-isbctl.c     | 1015 
> ++++++++++++++++++++++++++++++++++++++++++++
>  18 files changed, 2085 insertions(+), 1 deletion(-)
>  create mode 100644 lib/ovn-isb-idl.ann
>  create mode 100644 ovn-isb.ovsschema
>  create mode 100644 ovn-isb.xml
>  create mode 100644 tests/ovn-isbctl.at
>  create mode 100644 utilities/ovn-isbctl.8.xml
>  create mode 100644 utilities/ovn-isbctl.c
>
> diff --git a/.gitignore b/.gitignore
> index 1994937..66bb101 100644
> --- a/.gitignore
> +++ b/.gitignore
> @@ -70,6 +70,9 @@
>  /ovn-inb.5
>  /ovn-inb.gv
>  /ovn-inb.pic
> +/ovn-isb.5
> +/ovn-isb.gv
> +/ovn-isb.pic
>  /package.m4
>  /stamp-h1
>  /_build-gcc
> diff --git a/automake.mk b/automake.mk
> index 3bfbf57..85574fc 100644
> --- a/automake.mk
> +++ b/automake.mk
> @@ -97,6 +97,37 @@ ovn-inb.5: \
>                 $(srcdir)/ovn-inb.xml > [email protected] && \
>         mv [email protected] $@
>
> +# OVN interconnection southbound E-R diagram
> +#
> +# If "python" or "dot" is not available, then we do not add graphical diagram
> +# to the documentation.
> +if HAVE_PYTHON
> +if HAVE_DOT
> +ovn-isb.gv: ${OVSDIR}/ovsdb/ovsdb-dot.in $(srcdir)/ovn-isb.ovsschema
> +       $(AM_V_GEN)$(OVSDB_DOT) --no-arrows $(srcdir)/ovn-isb.ovsschema > $@
> +ovn-isb.pic: ovn-isb.gv ${OVSDIR}/ovsdb/dot2pic
> +       $(AM_V_GEN)(dot -T plain < ovn-isb.gv | $(PYTHON) 
> ${OVSDIR}/ovsdb/dot2pic -f 3) > [email protected] && \
> +       mv [email protected] $@
> +OVN_ISB_PIC = ovn-isb.pic
> +OVN_ISB_DOT_DIAGRAM_ARG = --er-diagram=$(OVN_ISB_PIC)
> +CLEANFILES += ovn-isb.gv ovn-isb.pic
> +endif
> +endif
> +
> +# OVN interconnection southbound schema documentation
> +EXTRA_DIST += ovn-isb.xml
> +CLEANFILES += ovn-isb.5
> +man_MANS += ovn-isb.5
> +
> +ovn-isb.5: \
> +       ${OVSDIR}/ovsdb/ovsdb-doc $(srcdir)/ovn-isb.xml 
> $(srcdir)/ovn-isb.ovsschema $(OVN_ISB_PIC)
> +       $(AM_V_GEN)$(OVSDB_DOC) \
> +               $(OVN_ISB_DOT_DIAGRAM_ARG) \
> +               --version=$(VERSION) \
> +               $(srcdir)/ovn-isb.ovsschema \
> +               $(srcdir)/ovn-isb.xml > [email protected] && \
> +       mv [email protected] $@
> +
>  # Version checking for ovn-nb.ovsschema.
>  ALL_LOCAL += ovn-nb.ovsschema.stamp
>  ovn-nb.ovsschema.stamp: ovn-nb.ovsschema
> @@ -114,8 +145,15 @@ ovn-inb.ovsschema.stamp: ovn-inb.ovsschema
>         $(srcdir)/build-aux/cksum-schema-check $? $@
>  CLEANFILES += ovn-inb.ovsschema.stamp
>
> +# Version checking for ovn-isb.ovsschema.
> +ALL_LOCAL += ovn-isb.ovsschema.stamp
> +ovn-isb.ovsschema.stamp: ovn-isb.ovsschema
> +       $(srcdir)/build-aux/cksum-schema-check $? $@
> +CLEANFILES += ovn-isb.ovsschema.stamp
> +
>  pkgdata_DATA += ovn-nb.ovsschema
>  pkgdata_DATA += ovn-sb.ovsschema
>  pkgdata_DATA += ovn-inb.ovsschema
> +pkgdata_DATA += ovn-isb.ovsschema
>
>  CLEANFILES += ovn-sb.ovsschema.stamp
> diff --git a/debian/ovn-common.install b/debian/ovn-common.install
> index 9e9bcfb..8f8ab23 100644
> --- a/debian/ovn-common.install
> +++ b/debian/ovn-common.install
> @@ -1,6 +1,7 @@
>  usr/bin/ovn-nbctl
>  usr/bin/ovn-sbctl
>  usr/bin/ovn-inbctl
> +usr/bin/ovn-isbctl
>  usr/bin/ovn-trace
>  usr/bin/ovn-detrace
>  usr/share/openvswitch/scripts/ovn-ctl
> diff --git a/debian/ovn-common.manpages b/debian/ovn-common.manpages
> index 94325dd..895da8d 100644
> --- a/debian/ovn-common.manpages
> +++ b/debian/ovn-common.manpages
> @@ -2,9 +2,11 @@ ovn/ovn-architecture.7
>  ovn/ovn-nb.5
>  ovn/ovn-sb.5
>  ovn/ovn-inb.5
> +ovn/ovn-isb.5
>  ovn/utilities/ovn-ctl.8
>  ovn/utilities/ovn-nbctl.8
>  ovn/utilities/ovn-sbctl.8
>  ovn/utilities/ovn-inbctl.8
> +ovn/utilities/ovn-isbctl.8
>  ovn/utilities/ovn-trace.8
>  ovn/utilities/ovn-detrace.1
> diff --git a/lib/.gitignore b/lib/.gitignore
> index e5d9bf3..19cc9f5 100644
> --- a/lib/.gitignore
> +++ b/lib/.gitignore
> @@ -8,4 +8,7 @@
>  /ovn-inb-idl.c
>  /ovn-inb-idl.h
>  /ovn-inb-idl.ovsidl
> +/ovn-isb-idl.c
> +/ovn-isb-idl.h
> +/ovn-isb-idl.ovsidl
>  /ovn-dirs.c
> diff --git a/lib/automake.mk b/lib/automake.mk
> index 83fdbcd..dc62be7 100644
> --- a/lib/automake.mk
> +++ b/lib/automake.mk
> @@ -31,7 +31,9 @@ nodist_lib_libovn_la_SOURCES = \
>         lib/ovn-sb-idl.c \
>         lib/ovn-sb-idl.h \
>         lib/ovn-inb-idl.c \
> -       lib/ovn-inb-idl.h
> +       lib/ovn-inb-idl.h \
> +       lib/ovn-isb-idl.c \
> +       lib/ovn-isb-idl.h
>
>  CLEANFILES += $(nodist_lib_libovn_la_SOURCES)
>
> @@ -89,3 +91,16 @@ lib/ovn-inb-idl.ovsidl: $(OVN_INB_IDL_FILES)
>         $(AM_V_GEN)$(OVSDB_IDLC) annotate $(OVN_INB_IDL_FILES) > [email protected] && \
>         mv [email protected] $@
>
> +# ovn-isb IDL
> +OVSIDL_BUILT += \
> +       lib/ovn-isb-idl.c \
> +       lib/ovn-isb-idl.h \
> +       lib/ovn-isb-idl.ovsidl
> +EXTRA_DIST += lib/ovn-isb-idl.ann
> +OVN_ISB_IDL_FILES = \
> +       $(srcdir)/ovn-isb.ovsschema \
> +       $(srcdir)/lib/ovn-isb-idl.ann
> +lib/ovn-isb-idl.ovsidl: $(OVN_ISB_IDL_FILES)
> +       $(AM_V_GEN)$(OVSDB_IDLC) annotate $(OVN_ISB_IDL_FILES) > [email protected] && \
> +       mv [email protected] $@
> +
> diff --git a/lib/ovn-isb-idl.ann b/lib/ovn-isb-idl.ann
> new file mode 100644
> index 0000000..ea6efad
> --- /dev/null
> +++ b/lib/ovn-isb-idl.ann
> @@ -0,0 +1,9 @@
> +# -*- python -*-
> +
> +# This code, when invoked by "ovsdb-idlc annotate" (by the build
> +# process), annotates ovn-isb.ovsschema with additional data that give
> +# the ovsdb-idl engine information about the types involved, so that
> +# it can generate more programmer-friendly data structures.
> +
> +s["idlPrefix"] = "isbrec_"
> +s["idlHeader"] = "\"lib/ovn-isb-idl.h\""
> diff --git a/lib/ovn-util.c b/lib/ovn-util.c
> index 23a362c..8d7db44 100644
> --- a/lib/ovn-util.c
> +++ b/lib/ovn-util.c
> @@ -363,6 +363,19 @@ default_inb_db(void)
>      return def;
>  }
>
> +const char *
> +default_isb_db(void)
> +{
> +    static char *def;
> +    if (!def) {
> +        def = getenv("OVN_ISB_DB");
> +        if (!def) {
> +            def = xasprintf("unix:%s/ovnisb_db.sock", ovn_rundir());
> +        }
> +    }
> +    return def;
> +}
> +
>  char *
>  get_abs_unix_ctl_path(void)
>  {
> diff --git a/lib/ovn-util.h b/lib/ovn-util.h
> index e31cf51..694c953 100644
> --- a/lib/ovn-util.h
> +++ b/lib/ovn-util.h
> @@ -73,6 +73,7 @@ char *alloc_nat_zone_key(const struct uuid *key, const char 
> *type);
>  const char *default_nb_db(void);
>  const char *default_sb_db(void);
>  const char *default_inb_db(void);
> +const char *default_isb_db(void);
>  char *get_abs_unix_ctl_path(void);
>
>  struct ovsdb_idl_table_class;
> diff --git a/ovn-isb.ovsschema b/ovn-isb.ovsschema
> new file mode 100644
> index 0000000..3d3b54e
> --- /dev/null
> +++ b/ovn-isb.ovsschema
> @@ -0,0 +1,129 @@
> +{
> +    "name": "OVN_IC_Southbound",
> +    "version": "1.0.0",
> +    "cksum": "3575687822 6054",
> +    "tables": {
> +        "ISB_Global": {
> +            "columns": {
> +                "external_ids": {
> +                    "type": {"key": "string", "value": "string",
> +                             "min": 0, "max": "unlimited"}},
> +                "connections": {
> +                    "type": {"key": {"type": "uuid",
> +                                     "refTable": "Connection"},
> +                                     "min": 0,
> +                                     "max": "unlimited"}},
> +                "ssl": {
> +                    "type": {"key": {"type": "uuid",
> +                                     "refTable": "SSL"},
> +                                     "min": 0, "max": 1}},
> +                "options": {
> +                    "type": {"key": "string", "value": "string",
> +                             "min": 0, "max": "unlimited"}}},
> +            "maxRows": 1,
> +            "isRoot": true},
> +        "Availability_Zone": {
> +            "columns": {
> +                "name": {"type": "string"}},
> +            "isRoot": true,
> +            "indexes": [["name"]]},
> +        "Gateway": {
> +            "columns": {
> +                "name": {"type": "string"},
> +                "availability_zone": {"type": {"key": {"type": "uuid",
> +                                             "refTable": 
> "Availability_Zone"}}},
> +                "hostname": {"type": "string"},
> +                "encaps": {"type": {"key": {"type": "uuid",
> +                                            "refTable": "Encap"},
> +                                    "min": 1, "max": "unlimited"}},
> +                "external_ids": {
> +                    "type": {"key": "string", "value": "string",
> +                             "min": 0, "max": "unlimited"}}},
> +            "isRoot": true,
> +            "indexes": [["name"]]},
> +        "Encap": {
> +            "columns": {
> +                "type": {"type": {"key": {
> +                           "type": "string",
> +                           "enum": ["set", ["geneve", "stt", "vxlan"]]}}},
> +                "options": {"type": {"key": "string",
> +                                     "value": "string",
> +                                     "min": 0,
> +                                     "max": "unlimited"}},
> +                "ip": {"type": "string"},
> +                "gateway_name": {"type": "string"}},
> +            "indexes": [["type", "ip"]]},
> +        "Datapath_Binding": {
> +            "columns": {
> +                "transit_switch": {"type": "string"},
> +                "tunnel_key": {
> +                     "type": {"key": {"type": "integer",
> +                                      "minInteger": 1,
> +                                      "maxInteger": 16777215}}},
> +                "external_ids": {
> +                    "type": {"key": "string", "value": "string",
> +                             "min": 0, "max": "unlimited"}}},
> +            "indexes": [["tunnel_key"]],
> +            "isRoot": true},
> +        "Port_Binding": {
> +            "columns": {
> +                "logical_port": {"type": "string"},
> +                "transit_switch": {"type": "string"},
> +                "availability_zone": {"type": {"key": {"type": "uuid",
> +                                             "refTable": 
> "Availability_Zone"}}},
> +                "tunnel_key": {
> +                     "type": {"key": {"type": "integer",
> +                                      "minInteger": 1,
> +                                      "maxInteger": 32767}}},
> +                "gateway": {"type": "string"},
> +                "encap": {"type": {"key": {"type": "uuid",
> +                                            "refTable": "Encap",
> +                                             "refType": "weak"},
> +                                    "min": 0, "max": 1}},
> +                "address": {"type": "string"},
> +                "external_ids": {"type": {"key": "string",
> +                                 "value": "string",
> +                                 "min": 0,
> +                                 "max": "unlimited"}}},
> +            "indexes": [["transit_switch", "tunnel_key"], ["logical_port"]],
> +            "isRoot": true},
> +        "Connection": {
> +            "columns": {
> +                "target": {"type": "string"},
> +                "max_backoff": {"type": {"key": {"type": "integer",
> +                                         "minInteger": 1000},
> +                                         "min": 0,
> +                                         "max": 1}},
> +                "inactivity_probe": {"type": {"key": "integer",
> +                                              "min": 0,
> +                                              "max": 1}},
> +                "other_config": {"type": {"key": "string",
> +                                          "value": "string",
> +                                          "min": 0,
> +                                          "max": "unlimited"}},
> +                "external_ids": {"type": {"key": "string",
> +                                 "value": "string",
> +                                 "min": 0,
> +                                 "max": "unlimited"}},
> +                "is_connected": {"type": "boolean", "ephemeral": true},
> +                "status": {"type": {"key": "string",
> +                                    "value": "string",
> +                                    "min": 0,
> +                                    "max": "unlimited"},
> +                                    "ephemeral": true}},
> +            "indexes": [["target"]]},
> +        "SSL": {
> +            "columns": {
> +                "private_key": {"type": "string"},
> +                "certificate": {"type": "string"},
> +                "ca_cert": {"type": "string"},
> +                "bootstrap_ca_cert": {"type": "boolean"},
> +                "ssl_protocols": {"type": "string"},
> +                "ssl_ciphers": {"type": "string"},
> +                "external_ids": {"type": {"key": "string",
> +                                          "value": "string",
> +                                          "min": 0,
> +                                          "max": "unlimited"}}},
> +            "maxRows": 1}
> +    }
> +}
> diff --git a/ovn-isb.xml b/ovn-isb.xml
> new file mode 100644
> index 0000000..0024165
> --- /dev/null
> +++ b/ovn-isb.xml
> @@ -0,0 +1,582 @@
> +<?xml version="1.0" encoding="utf-8"?>
> +<database name="ovn-isb" title="OVN Interconnection Southbound Database">
> +  <p>
> +    This database holds configuration and state for interconnecting different
> +    OVN deployments.  The content of the database is populated and used by 
> the
> +    <code>ovn-ic</code> program in each OVN deployment, and not supposed to 
> be
> +    directly used by CMS or end user.
> +  </p>
> +
> +  <p>
> +    The OVN Interconnection Southbound database is shared by
> +    <code>ovn-ic</code> program in each OVN deployment.  It contains
> +    interconnection information from all related OVN deployments, and is used
> +    as the intermediate store for each OVN deployment to exchange the
> +    information.  The <code>ovn-ic</code> program in each deployment is
> +    responsible for syncing the data between this database and the its own
> +    northbound and southbound databases.
> +  </p>
> +
> +  <h2>Database Structure</h2>
> +
> +  <p>
> +    The OVN Interconnection Southbound database contains classes of data with
> +    different properties, as described in the sections below.
> +  </p>
> +
> +  <h3>Availability Zone Specific Information</h3>
> +
> +  <p>
> +    These tables contain objects that are availability zone specific.  Each 
> object
> +    is owned and populated by one availability zone, and read by other 
> availability
> +    zones.
> +  </p>
> +
> +  <p>
> +    The <ref table="Availability_Zone"/>, <ref table="Gateway"/>, <ref
> +    table="Encap"/> and <ref table="Port_Binding"/> tables are the 
> availability
> +    zone specific tables.
> +  </p>
> +
> +  <h3>Global Information</h3>
> +
> +  <p>
> +    The data that does not belong to any specific availability zone but is
> +    common for all availability zones.
> +  </p>
> +
> +  <p>
> +    The <ref table="Datapath_Binding"/> table contains the common datapath
> +    binding information.
> +  </p>
> +
> +  <h3>Common Columns</h3>
> +  <p>
> +    Each of the tables in this database contains a special column, named
> +    <code>external_ids</code>.  This column has the same form and purpose 
> each
> +    place it appears.
> +  </p>
> +
> +  <dl>
> +    <dt><code>external_ids</code>: map of string-string pairs</dt>
> +    <dd>
> +      Key-value pairs for use by <code>ovn-ic</code>.
> +    </dd>
> +  </dl>
> +  <table name="ISB_Global" title="IC Southbound configuration">
> +    <p>
> +      Interconnection Southbound configuration.  This table must have exactly
> +      one row.
> +    </p>
> +
> +    <group title="Common Columns">
> +      <column name="external_ids">
> +        See <em>External IDs</em> at the beginning of this document.
> +      </column>
> +
> +      <column name="options">
> +      </column>
> +    </group>
> +
> +    <group title="Connection Options">
> +      <column name="connections">
> +        Database clients to which the Open vSwitch database server should
> +        connect or on which it should listen, along with options for how 
> these
> +        connections should be configured.  See the <ref table="Connection"/>
> +        table for more information.
> +      </column>
> +      <column name="ssl">
> +        Global SSL configuration.
> +      </column>
> +    </group>
> +  </table>
> +
> +  <table name="Availability_Zone" title="Availability Zone Information">
> +    <p>
> +      Each row in this table represents an Availability Zone.  Each OVN 
> deployment
> +      is considered an availability zone from OVN control plane perspective, 
> with
> +      its own central components, such as northbound and southbound 
> databases and
> +      <code>ovn-northd</code> daemon.
> +    </p>
> +
> +    <column name="name">
> +      A name that uniquely identifies the availability zone.
> +    </column>
> +  </table>
> +
> +  <table name="Gateway" title="Interconnection Gateway Information">
> +    <p>
> +      Each row in this table represents a interconnection gateway chassis in 
> an
> +      availability zone.
> +    </p>
> +
> +    <column name="name">
> +      The name of the gateway.  See <ref table="Chassis" column="name"/> 
> column
> +      of the OVN Southbound database's <ref table="Chassis"
> +      db="OVN_Southbound"/> table.
> +    </column>
> +
> +    <column name="availability_zone">
> +      The availabilty zone that the gateway belongs to.
> +    </column>
> +
> +    <column name="hostname">
> +      The hostname of the gateway.
> +    </column>
> +
> +    <group title="Common Columns">
> +      The overall purpose of these columns is described under <code>Common
> +      Columns</code> at the beginning of this document.
> +
> +      <column name="external_ids"/>
> +    </group>
> +
> +    <group title="Encapsulation Configuration">
> +      <p>
> +        OVN uses encapsulation to transmit logical dataplane packets
> +        between gateways.
> +      </p>
> +
> +      <column name="encaps">
> +        Points to supported encapsulation configurations to transmit
> +        logical dataplane packets to this gateway.  Each entry is a <ref
> +        table="Encap"/> record that describes the configuration.
> +        See <ref table="Chassis" column="encaps"/> column
> +        of the OVN Southbound database's <ref table="Chassis"
> +        db="OVN_Southbound"/> table.
> +      </column>
> +    </group>
> +
> +  </table>
> +
> +  <table name="Encap" title="Encapsulation Types">
> +    <p>
> +      The <ref column="encaps" table="Gateway"/> column in the <ref
> +      table="Gateway"/> table refers to rows in this table to identify
> +      how OVN may transmit logical dataplane packets to this gateway.
> +    </p>
> +
> +    <column name="type">
> +      The encapsulation to use to transmit packets to this gateway.
> +      See <ref table="Encap" column="type"/> column
> +      of the OVN Southbound database's <ref table="Encap"
> +      db="OVN_Southbound"/> table.
> +    </column>
> +
> +    <column name="options">
> +      Options for configuring the encapsulation, which may be <ref
> +      column="type"/> specific.  See <ref table="Encap" column="options"/>
> +      column of the OVN Southbound database's <ref table="Encap"
> +      db="OVN_Southbound"/> table.
> +    </column>
> +
> +    <column name="ip">
> +      The IPv4 address of the encapsulation tunnel endpoint.
> +    </column>
> +
> +    <column name="gateway_name">
> +      The name of the gateway that created this encap.
> +    </column>
> +  </table>
> +
> +  <table name="Datapath_Binding" title="Transit Switch Datapath Bindings">
> +    <p>
> +      Each row in this table represents a logical datapath for a transit
> +      logical switch configured in the OVN Interconnection Northbound
> +      database's <ref table="Transit_Switch" db="OVN_IC_Northbound"/> table.
> +    </p>
> +
> +    <column name="transit_switch">
> +      The name of the transit logical switch that is configured in the OVN
> +      Interconnection Northbound database's <ref table="Transit_Switch"
> +      db="OVN_IC_Northbound"/> table.
> +    </column>
> +
> +    <column name="tunnel_key">
> +      <p>
> +        The tunnel key value to which the logical datapath is bound.  The key
> +        can be generated by any <code>ovn-ic</code> but the same key is 
> shared
> +        by all availability zones so that the logical datapaths can be peered
> +        across them.  A tunnel key for transit switch datapath binding must 
> be
> +        globally unique.
> +      </p>
> +
> +      <p>
> +        For more information about the meanings of a tunnel key,
> +        see <ref table="Datapath_Binding" column="tunnel_key"/> column of 
> the OVN
> +        Southbound database's <ref table="Datapath_Binding" 
> db="OVN_Southbound"/>
> +        table.
> +      </p>
> +    </column>
> +
> +    <group title="Common Columns">
> +      The overall purpose of these columns is described under <code>Common
> +      Columns</code> at the beginning of this document.
> +
> +      <column name="external_ids"/>
> +    </group>
> +  </table>
> +
> +  <table name="Port_Binding" title="Transit Port Bindings">
> +    <p>
> +      Each row in this table binds a logical port on the transit switch to a
> +      physical gateway and a tunnel key.  Each port on the transit switch
> +      belongs to a specific availability zone.
> +    </p>
> +
> +    <group title="Core Features">
> +      <column name="transit_switch">
> +        The name of the transit switch that the corresponding logical port
> +        belongs to.
> +      </column>
> +
> +      <column name="logical_port">
> +        A logical port, taken from <ref table="Logical_Switch_Port"
> +        column="name" db="OVN_Northbound"/> in the OVN_Northbound
> +        database's <ref table="Logical_Switch_Port" db="OVN_Northbound"/>
> +        table.  The logical port name must be unique across all availability
> +        zones.
> +      </column>
> +
> +      <column name="availability_zone">
> +        The availability zone that the port belongs to.
> +      </column>
> +
> +      <column name="encap">
> +        Points to supported encapsulation configurations to transmit
> +        logical dataplane packets to this gateway.  Each entry is a <ref
> +        table="Encap"/> record that describes the configuration.
> +      </column>
> +
> +      <column name="gateway">
> +        The name of the gateway that this port is physically located.
> +      </column>
> +
> +      <column name="tunnel_key">
> +        <p>
> +          A number that represents the logical port in the key (e.g. STT key 
> or
> +          Geneve TLV) field carried within tunnel protocol packets.  The key
> +          can be generated by any <code>ovn-ic</code> but the same key is
> +          shared by all availability zones so that the packets can go through
> +          the datapath pipelines of different availability zones.
> +        </p>
> +        <p>
> +          The tunnel ID must be unique within the scope of a logical 
> datapath.
> +        </p>
> +        <p>
> +          For more information about tunnel key, see <ref 
> table="Port_Binding"
> +          column="tunnel_key"/> column of the OVN Southbound database's <ref
> +          table="Port_Binding" db="OVN_Southbound"/> table.
> +        </p>
> +      </column>
> +
> +      <column name="address">
> +        <p>
> +          The Ethernet address and IP addresses used by the corresponding 
> logical
> +          router port peering with the transit switch port.  It is a string 
> combined
> +          with the value of <ref table="Logical_Router_Port" column="mac"/>
> +          column followed by the values in <ref table="Logical_Router_Port"
> +          column="networks"/> column in <ref table="Logical_Router_Port"
> +          db="OVN_Northbound"/> table.
> +        </p>
> +      </column>
> +
> +    </group>
> +
> +    <group title="Common Columns">
> +      <column name="external_ids">
> +        <p>
> +          See <em>External IDs</em> at the beginning of this document.
> +        </p>
> +      </column>
> +    </group>
> +  </table>
> +
> +  <table name="Connection" title="OVSDB client connections.">
> +    <p>
> +      Configuration for a database connection to an Open vSwitch database
> +      (OVSDB) client.
> +    </p>
> +
> +    <p>
> +      This table primarily configures the Open vSwitch database server
> +      (<code>ovsdb-server</code>).
> +    </p>
> +
> +    <p>
> +      The Open vSwitch database server can initiate and maintain active
> +      connections to remote clients.  It can also listen for database
> +      connections.
> +    </p>
> +
> +    <group title="Core Features">
> +      <column name="target">
> +        <p>Connection methods for clients.</p>
> +        <p>
> +          The following connection methods are currently supported:
> +        </p>
> +        <dl>
> +          
> <dt><code>ssl:<var>host</var></code>[<code>:<var>port</var></code>]</dt>
> +          <dd>
> +            <p>
> +              The specified SSL <var>port</var> on the given <var>host</var>,
> +              which can either be a DNS name (if built with unbound library) 
> or
> +              an IP address.  A valid SSL configuration must be provided when
> +              this form is used, this configuration can be specified via
> +              command-line options or the <ref table="SSL"/> table.
> +            </p>
> +            <p>
> +              If <var>port</var> is not specified, it defaults to 6640.
> +            </p>
> +            <p>
> +              SSL support is an optional feature that is not always
> +              built as part of Open vSwitch.
> +            </p>
> +          </dd>
> +
> +          
> <dt><code>tcp:<var>host</var></code>[<code>:<var>port</var></code>]</dt>
> +          <dd>
> +            <p>
> +              The specified TCP <var>port</var> on the given <var>host</var>,
> +              which can either be a DNS name (if built with unbound library) 
> or
> +              an IP address (IPv4 or IPv6).  If <var>host</var> is an IPv6
> +              address, wrap it in square brackets, e.g. 
> <code>tcp:[::1]:6640</code>.
> +            </p>
> +            <p>
> +              If <var>port</var> is not specified, it defaults to 6640.
> +            </p>
> +          </dd>
> +          
> <dt><code>pssl:</code>[<var>port</var>][<code>:<var>host</var></code>]</dt>
> +          <dd>
> +            <p>
> +              Listens for SSL connections on the specified TCP 
> <var>port</var>.
> +              Specify 0 for <var>port</var> to have the kernel automatically
> +              choose an available port.  If <var>host</var>, which can either
> +              be a DNS name (if built with unbound library) or an IP address,
> +              is specified, then connections are restricted to the resolved 
> or
> +              specified local IP address (either IPv4 or IPv6 address).  If
> +              <var>host</var> is an IPv6 address, wrap in square brackets,
> +              e.g. <code>pssl:6640:[::1]</code>.  If <var>host</var> is not
> +              specified then it listens only on IPv4 (but not IPv6) 
> addresses.
> +              A valid SSL configuration must be provided when this form is 
> used,
> +              this can be specified either via command-line options or the
> +              <ref table="SSL"/> table.
> +            </p>
> +            <p>
> +              If <var>port</var> is not specified, it defaults to 6640.
> +            </p>
> +            <p>
> +              SSL support is an optional feature that is not always built as
> +              part of Open vSwitch.
> +            </p>
> +          </dd>
> +          
> <dt><code>ptcp:</code>[<var>port</var>][<code>:<var>host</var></code>]</dt>
> +          <dd>
> +            <p>
> +              Listens for connections on the specified TCP <var>port</var>.
> +              Specify 0 for <var>port</var> to have the kernel automatically
> +              choose an available port.  If <var>host</var>, which can either
> +              be a DNS name (if built with unbound library) or an IP address,
> +              is specified, then connections are restricted to the resolved 
> or
> +              specified local IP address (either IPv4 or IPv6 address).  If
> +              <var>host</var> is an IPv6 address, wrap it in square brackets,
> +              e.g. <code>ptcp:6640:[::1]</code>.  If <var>host</var> is not
> +              specified then it listens only on IPv4 addresses.
> +            </p>
> +            <p>
> +              If <var>port</var> is not specified, it defaults to 6640.
> +            </p>
> +          </dd>
> +        </dl>
> +        <p>When multiple clients are configured, the <ref column="target"/>
> +        values must be unique.  Duplicate <ref column="target"/> values yield
> +        unspecified results.</p>
> +      </column>
> +
> +    </group>
> +
> +    <group title="Client Failure Detection and Handling">
> +      <column name="max_backoff">
> +        Maximum number of milliseconds to wait between connection attempts.
> +        Default is implementation-specific.
> +      </column>
> +
> +      <column name="inactivity_probe">
> +        Maximum number of milliseconds of idle time on connection to the 
> client
> +        before sending an inactivity probe message.  If Open vSwitch does not
> +        communicate with the client for the specified number of seconds, it
> +        will send a probe.  If a response is not received for the same
> +        additional amount of time, Open vSwitch assumes the connection has 
> been
> +        broken and attempts to reconnect.  Default is 
> implementation-specific.
> +        A value of 0 disables inactivity probes.
> +      </column>
> +    </group>
> +
> +    <group title="Status">
> +      <p>
> +        Key-value pair of <ref column="is_connected"/> is always updated.
> +        Other key-value pairs in the status columns may be updated depends
> +        on the <ref column="target"/> type.
> +      </p>
> +
> +      <p>
> +        When <ref column="target"/> specifies a connection method that
> +        listens for inbound connections (e.g. <code>ptcp:</code> or
> +        <code>punix:</code>), both <ref column="n_connections"/> and
> +        <ref column="is_connected"/> may also be updated while the
> +        remaining key-value pairs are omitted.
> +      </p>
> +
> +      <p>
> +        On the other hand, when <ref column="target"/> specifies an
> +        outbound connection, all key-value pairs may be updated, except
> +        the above-mentioned two key-value pairs associated with inbound
> +        connection targets. They are omitted.
> +      </p>
> +
> +      <column name="is_connected">
> +        <code>true</code> if currently connected to this client,
> +        <code>false</code> otherwise.
> +      </column>
> +
> +      <column name="status" key="last_error">
> +        A human-readable description of the last error on the connection
> +        to the manager; i.e. <code>strerror(errno)</code>.  This key
> +        will exist only if an error has occurred.
> +      </column>
> +
> +      <column name="status" key="state"
> +              type='{"type": "string", "enum": ["set", ["VOID", "BACKOFF", 
> "CONNECTING", "ACTIVE", "IDLE"]]}'>
> +        <p>
> +          The state of the connection to the manager:
> +        </p>
> +        <dl>
> +          <dt><code>VOID</code></dt>
> +          <dd>Connection is disabled.</dd>
> +
> +          <dt><code>BACKOFF</code></dt>
> +          <dd>Attempting to reconnect at an increasing period.</dd>
> +
> +          <dt><code>CONNECTING</code></dt>
> +          <dd>Attempting to connect.</dd>
> +
> +          <dt><code>ACTIVE</code></dt>
> +          <dd>Connected, remote host responsive.</dd>
> +
> +          <dt><code>IDLE</code></dt>
> +          <dd>Connection is idle.  Waiting for response to keep-alive.</dd>
> +        </dl>
> +        <p>
> +          These values may change in the future.  They are provided only for
> +          human consumption.
> +        </p>
> +      </column>
> +
> +      <column name="status" key="sec_since_connect"
> +              type='{"type": "integer", "minInteger": 0}'>
> +        The amount of time since this client last successfully connected
> +        to the database (in seconds). Value is empty if client has never
> +        successfully been connected.
> +      </column>
> +
> +      <column name="status" key="sec_since_disconnect"
> +              type='{"type": "integer", "minInteger": 0}'>
> +        The amount of time since this client last disconnected from the
> +        database (in seconds). Value is empty if client has never
> +        disconnected.
> +      </column>
> +
> +      <column name="status" key="locks_held">
> +        Space-separated list of the names of OVSDB locks that the connection
> +        holds.  Omitted if the connection does not hold any locks.
> +      </column>
> +
> +      <column name="status" key="locks_waiting">
> +        Space-separated list of the names of OVSDB locks that the connection 
> is
> +        currently waiting to acquire.  Omitted if the connection is not 
> waiting
> +        for any locks.
> +      </column>
> +
> +      <column name="status" key="locks_lost">
> +        Space-separated list of the names of OVSDB locks that the connection
> +        has had stolen by another OVSDB client.  Omitted if no locks have 
> been
> +        stolen from this connection.
> +      </column>
> +
> +      <column name="status" key="n_connections"
> +              type='{"type": "integer", "minInteger": 2}'>
> +        When <ref column="target"/> specifies a connection method that
> +        listens for inbound connections (e.g. <code>ptcp:</code> or
> +        <code>pssl:</code>) and more than one connection is actually active,
> +        the value is the number of active connections.  Otherwise, this
> +        key-value pair is omitted.
> +      </column>
> +
> +      <column name="status" key="bound_port" type='{"type": "integer"}'>
> +        When <ref column="target"/> is <code>ptcp:</code> or
> +        <code>pssl:</code>, this is the TCP port on which the OVSDB server is
> +        listening.  (This is particularly useful when <ref
> +        column="target"/> specifies a port of 0, allowing the kernel to
> +        choose any available port.)
> +      </column>
> +    </group>
> +
> +    <group title="Common Columns">
> +      The overall purpose of these columns is described under <code>Common
> +      Columns</code> at the beginning of this document.
> +
> +      <column name="external_ids"/>
> +      <column name="other_config"/>
> +    </group>
> +  </table>
> +  <table name="SSL">
> +    SSL configuration for ovn-sb database access.
> +
> +    <column name="private_key">
> +      Name of a PEM file containing the private key used as the switch's
> +      identity for SSL connections to the controller.
> +    </column>
> +
> +    <column name="certificate">
> +      Name of a PEM file containing a certificate, signed by the
> +      certificate authority (CA) used by the controller and manager,
> +      that certifies the switch's private key, identifying a trustworthy
> +      switch.
> +    </column>
> +
> +    <column name="ca_cert">
> +      Name of a PEM file containing the CA certificate used to verify
> +      that the switch is connected to a trustworthy controller.
> +    </column>
> +
> +    <column name="bootstrap_ca_cert">
> +      If set to <code>true</code>, then Open vSwitch will attempt to
> +      obtain the CA certificate from the controller on its first SSL
> +      connection and save it to the named PEM file. If it is successful,
> +      it will immediately drop the connection and reconnect, and from then
> +      on all SSL connections must be authenticated by a certificate signed
> +      by the CA certificate thus obtained.  <em>This option exposes the
> +      SSL connection to a man-in-the-middle attack obtaining the initial
> +      CA certificate.</em>  It may still be useful for bootstrapping.
> +    </column>
> +
> +    <column name="ssl_protocols">
> +      List of SSL protocols to be enabled for SSL connections. The default
> +      when this option is omitted is <code>TLSv1,TLSv1.1,TLSv1.2</code>.
> +    </column>
> +
> +    <column name="ssl_ciphers">
> +      List of ciphers (in OpenSSL cipher string format) to be supported
> +      for SSL connections. The default when this option is omitted is
> +      <code>HIGH:!aNULL:!MD5</code>.
> +    </column>
> +
> +    <group title="Common Columns">
> +      The overall purpose of these columns is described under <code>Common
> +      Columns</code> at the beginning of this document.
> +
> +      <column name="external_ids"/>
> +    </group>
> +  </table>
> +
> +</database>
> diff --git a/tests/automake.mk b/tests/automake.mk
> index d978c05..d62304e 100644
> --- a/tests/automake.mk
> +++ b/tests/automake.mk
> @@ -25,6 +25,7 @@ TESTSUITE_AT = \
>         tests/ovn-nbctl.at \
>         tests/ovn-sbctl.at \
>         tests/ovn-inbctl.at \
> +       tests/ovn-isbctl.at \
>         tests/ovn-controller.at \
>         tests/ovn-controller-vtep.at \
>         tests/ovn-macros.at \
> @@ -101,6 +102,7 @@ valgrind_wrappers = \
>         tests/valgrind/ovn-northd \
>         tests/valgrind/ovn-sbctl \
>         tests/valgrind/ovn-inbctl \
> +       tests/valgrind/ovn-isbctl \
>         tests/valgrind/ovs-appctl \
>         tests/valgrind/ovs-ofctl \
>         tests/valgrind/ovs-vsctl \
> diff --git a/tests/ovn-isbctl.at b/tests/ovn-isbctl.at
> new file mode 100644
> index 0000000..d7a5527
> --- /dev/null
> +++ b/tests/ovn-isbctl.at
> @@ -0,0 +1,112 @@
> +AT_BANNER([ovn-isbctl])
> +
> +# OVN_ISBCTL_TEST_START
> +m4_define([OVN_ISBCTL_TEST_START],
> +  [dnl Create database (ovn-isb).
> +   AT_KEYWORDS([isbctl])
> +   AT_CHECK([ovsdb-tool create ovn-isb.db $abs_top_srcdir/ovn-isb.ovsschema])
> +
> +   dnl Start ovsdb-servers.
> +   AT_CHECK([ovsdb-server --detach --no-chdir --pidfile=ovnisb_db.pid 
> --unixctl=$OVS_RUNDIR/ovnisb_db.ctl --log-file=ovsdb_inb.log 
> --remote=punix:$OVS_RUNDIR/ovnisb_db.sock ovn-isb.db ], [0], [], [stderr])
> +   on_exit "kill `cat ovnisb_db.pid`"
> +   AT_CHECK([[sed < stderr '
> +/vlog|INFO|opened log file/d
> +/ovsdb_server|INFO|ovsdb-server (Open vSwitch)/d']])
> +   AT_CAPTURE_FILE([ovsdb-server.log])
> +])
> +
> +# OVN_ISBCTL_TEST_STOP
> +m4_define([OVN_ISBCTL_TEST_STOP],
> +  [AT_CHECK([check_logs "$1"])
> +   OVS_APP_EXIT_AND_WAIT_BY_TARGET([$OVS_RUNDIR/ovnisb_db.ctl], 
> [$OVS_RUNDIR/ovnisb_db.pid])])
> +
> +dnl ---------------------------------------------------------------------
> +
> +AT_SETUP([ovn-isbctl])
> +OVN_ISBCTL_TEST_START
> +
> +for az in 1 2; do
> +  az_uuid=$(ovn-isbctl create availability_zone name=az$az)
> +  for gw in 1 2; do
> +    ovn-isbctl --id=@encap create encap type=geneve ip=192.168.0.$az$gw 
> options="csum=true" \
> +      -- create gateway availability_zone=$az_uuid name=gw$az$gw 
> encap=@encap hostname=host.gw$az$gw
> +    for pb in 1 2; do
> +      ovn-isbctl create port_binding logical_port=lp$az$gw$pb 
> transit_switch="ts$pb" \
> +        address="\"aa:aa:aa:aa:0$az:$gw$pb 169.254.$pb.$az$gw/24\"" 
> tunnel_key=$az$gw \
> +        availability_zone=$az_uuid gateway=gw$az$gw
> +    done
> +  done
> +done
> +
> +AT_CHECK([ovn-isbctl show], [0], [dnl
> +availability-zone az1
> +    gateway gw11
> +        hostname: host.gw11
> +        type: geneve
> +            ip: 192.168.0.11
> +        port lp111
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:01:11 169.254.1.11/24"]]
> +        port lp112
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:01:12 169.254.2.11/24"]]
> +    gateway gw12
> +        hostname: host.gw12
> +        type: geneve
> +            ip: 192.168.0.12
> +        port lp121
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:01:21 169.254.1.12/24"]]
> +        port lp122
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:01:22 169.254.2.12/24"]]
> +availability-zone az2
> +    gateway gw21
> +        hostname: host.gw21
> +        type: geneve
> +            ip: 192.168.0.21
> +        port lp211
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:02:11 169.254.1.21/24"]]
> +        port lp212
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:02:12 169.254.2.21/24"]]
> +    gateway gw22
> +        hostname: host.gw22
> +        type: geneve
> +            ip: 192.168.0.22
> +        port lp221
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:02:21 169.254.1.22/24"]]
> +        port lp222
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:02:22 169.254.2.22/24"]]
> +])
> +
> +AT_CHECK([ovn-isbctl show az2], [0], [dnl
> +availability-zone az2
> +    gateway gw21
> +        hostname: host.gw21
> +        type: geneve
> +            ip: 192.168.0.21
> +        port lp211
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:02:11 169.254.1.21/24"]]
> +        port lp212
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:02:12 169.254.2.21/24"]]
> +    gateway gw22
> +        hostname: host.gw22
> +        type: geneve
> +            ip: 192.168.0.22
> +        port lp221
> +            transit switch: ts1
> +            address: [["aa:aa:aa:aa:02:21 169.254.1.22/24"]]
> +        port lp222
> +            transit switch: ts2
> +            address: [["aa:aa:aa:aa:02:22 169.254.2.22/24"]]
> +])
> +
> +
> +OVN_ISBCTL_TEST_STOP
> +AT_CLEANUP
> diff --git a/tests/testsuite.at b/tests/testsuite.at
> index 20dbccb..ea6b04a 100644
> --- a/tests/testsuite.at
> +++ b/tests/testsuite.at
> @@ -26,6 +26,7 @@ m4_include([tests/ovn-northd.at])
>  m4_include([tests/ovn-nbctl.at])
>  m4_include([tests/ovn-sbctl.at])
>  m4_include([tests/ovn-inbctl.at])
> +m4_include([tests/ovn-isbctl.at])
>  m4_include([tests/ovn-controller.at])
>  m4_include([tests/ovn-controller-vtep.at])
>  m4_include([tests/checkpatch.at])
> diff --git a/utilities/.gitignore b/utilities/.gitignore
> index 5321110..a8ff6e5 100644
> --- a/utilities/.gitignore
> +++ b/utilities/.gitignore
> @@ -5,6 +5,8 @@
>  /ovn-sbctl.8
>  /ovn-inbctl
>  /ovn-inbctl.8
> +/ovn-isbctl
> +/ovn-isbctl.8
>  /ovn-appctl
>  /ovn-appctl.8
>  /ovn-trace
> diff --git a/utilities/automake.mk b/utilities/automake.mk
> index 30c52fa..2bea391 100644
> --- a/utilities/automake.mk
> +++ b/utilities/automake.mk
> @@ -8,6 +8,7 @@ man_MANS += \
>      utilities/ovn-nbctl.8 \
>      utilities/ovn-sbctl.8 \
>      utilities/ovn-inbctl.8 \
> +    utilities/ovn-isbctl.8 \
>      utilities/ovn-trace.8 \
>      utilities/ovn-detrace.1 \
>      utilities/ovn-appctl.8
> @@ -30,6 +31,7 @@ EXTRA_DIST += \
>      utilities/ovn-docker-underlay-driver.in \
>      utilities/ovn-nbctl.8.xml \
>      utilities/ovn-inbctl.8.xml \
> +    utilities/ovn-isbctl.8.xml \
>      utilities/ovn-appctl.8.xml \
>      utilities/ovn-trace.8.xml \
>      utilities/ovn-detrace.in \
> @@ -51,6 +53,7 @@ CLEANFILES += \
>      utilities/ovn-nbctl.8 \
>      utilities/ovn-sbctl.8 \
>      utilities/ovn-inbctl.8 \
> +    utilities/ovn-isbctl.8 \
>      utilities/ovn-trace.8 \
>      utilities/ovn-detrace.1 \
>      utilities/ovn-detrace \
> @@ -74,6 +77,11 @@ bin_PROGRAMS += utilities/ovn-inbctl
>  utilities_ovn_inbctl_SOURCES = utilities/ovn-inbctl.c
>  utilities_ovn_inbctl_LDADD = lib/libovn.la $(OVSDB_LIBDIR)/libovsdb.la 
> $(OVS_LIBDIR)/libopenvswitch.la
>
> +# ovn-isbctl
> +bin_PROGRAMS += utilities/ovn-isbctl
> +utilities_ovn_isbctl_SOURCES = utilities/ovn-isbctl.c
> +utilities_ovn_isbctl_LDADD = lib/libovn.la $(OVSDB_LIBDIR)/libovsdb.la 
> $(OVS_LIBDIR)/libopenvswitch.la
> +
>  # ovn-trace
>  bin_PROGRAMS += utilities/ovn-trace
>  utilities_ovn_trace_SOURCES = utilities/ovn-trace.c
> diff --git a/utilities/ovn-isbctl.8.xml b/utilities/ovn-isbctl.8.xml
> new file mode 100644
> index 0000000..65b7557
> --- /dev/null
> +++ b/utilities/ovn-isbctl.8.xml
> @@ -0,0 +1,148 @@
> +<?xml version="1.0" encoding="utf-8"?>
> +<manpage program="ovn-isbctl" section="8" title="ovn-isbctl">
> +    <h1>Name</h1>
> +    <p>ovn-isbctl -- Open Virtual Network interconnection southbound db 
> management utility</p>
> +
> +    <h1>Synopsis</h1>
> +    <p><code>ovn-isbctl</code> [<var>options</var>] <var>command</var> 
> [<var>arg</var>...]</p>
> +
> +    <h1>Description</h1>
> +    <p>This utility can be used to manage the OVN interconnection southbound 
> database.</p>
> +
> +    <h1>General Commands</h1>
> +
> +    <dl>
> +      <dt><code>init</code></dt>
> +      <dd>
> +        Initializes the database, if it is empty.  If the database has 
> already
> +        been initialized, this command has no effect.
> +      </dd>
> +
> +      <dt><code>show [<var>availability_zone</var>]</code></dt>
> +      <dd>
> +        Prints a brief overview of the database contents.  If
> +        <var>availability_zone</var> is provided, only records related to 
> that
> +        availability zone are shown.
> +      </dd>
> +    </dl>
> +
> +    <h1>Database Commands</h1>
> +    <p>These commands query and modify the contents of <code>ovsdb</code> 
> tables.
> +    They are a slight abstraction of the <code>ovsdb</code> interface and
> +    as such they operate at a lower level than other <code>ovn-isbctl</code> 
> commands.</p>
> +    <p><var>Identifying Tables, Records, and Columns</var></p>
> +    <p>Each of these commands has a <var>table</var> parameter to identify a 
> table
> +    within the database.  Many of them also take a <var>record</var> 
> parameter
> +    that identifies a particular record within a table.  The 
> <var>record</var>
> +    parameter may be the UUID for a record, which may be abbreviated to its
> +    first 4 (or more) hex digits, as long as that is unique.  Many tables 
> offer
> +    additional ways to identify records.  Some commands also take
> +    <var>column</var> parameters that identify a particular field within the
> +    records in a table.</p>
> +
> +    <p>
> +      For a list of tables and their columns, see <code>ovn-isb</code>(5) or
> +      see the table listing from the <code>--help</code> option.
> +    </p>
> +
> +    <p>
> +      Record names must be specified in full and with correct capitalization,
> +      except that UUIDs may be abbreviated to their first 4 (or more) hex
> +      digits, as long as that is unique within the table.  Names of tables 
> and
> +      columns are not case-sensitive, and <code>-</code> and <code>_</code> 
> are
> +      treated interchangeably.  Unique abbreviations of table and column 
> names
> +      are acceptable, e.g. <code>g</code> or <code>gatew</code> is sufficient
> +      to identify the <code>Gateway</code> table.
> +    </p>
> +
> +    <xi:include href="lib/db-ctl-base.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +
> +    <h1>Remote Connectivity Commands</h1>
> +    <dl>
> +      <dt><code>get-connection</code></dt>
> +      <dd>
> +      Prints the configured connection(s).
> +      </dd>
> +
> +      <dt><code>del-connection</code></dt>
> +      <dd>
> +      Deletes the configured connection(s).
> +      </dd>
> +
> +      <dt>[<code>--inactivity-probe=</code><var>msecs</var>] 
> <code>set-connection</code> <var>target</var>...</dt>
> +      <dd>
> +        Sets the configured manager target or targets.  Use
> +        <code>--inactivity-probe=</code><var>msecs</var> to override the 
> default
> +        idle connection inactivity probe time.  Use 0 to disable inactivity 
> probes.
> +      </dd>
> +    </dl>
> +
> +    <h1>SSL Configuration Commands</h1>
> +    <dl>
> +      <dt><code>get-ssl</code></dt>
> +      <dd>
> +      Prints the SSL configuration.
> +      </dd>
> +
> +      <dt><code>del-ssl</code></dt>
> +      <dd>
> +      Deletes the current SSL configuration.
> +      </dd>
> +
> +      <dt>[<code>--bootstrap</code>] <code>set-ssl</code>
> +         <var>private-key</var> <var>certificate</var> <var>ca-cert</var>
> +         [<var>ssl-protocol-list</var> [<var>ssl-cipher-list</var>]]</dt>
> +      <dd>
> +      Sets the SSL configuration.
> +      </dd>
> +    </dl>
> +
> +    <h1>Options</h1>
> +
> +    <dl>
> +    <dt><code>--db</code> <var>database</var></dt>
> +    <dd>
> +      The OVSDB database remote to contact.  If the <env>OVN_ISB_DB</env>
> +      environment variable is set, its value is used as the default.
> +      Otherwise, the default is <code>unix:@RUNDIR@/ovnisb_db.sock</code>, 
> but this
> +      default is unlikely to be useful outside of single-machine OVN test
> +      environments.
> +    </dd>
> +
> +    <dt><code>--leader-only</code></dt>
> +    <dt><code>--no-leader-only</code></dt>
> +    <dd>
> +      By default, or with <code>--leader-only</code>, when the database 
> server
> +      is a clustered database, <code>ovn-isbctl</code> will avoid servers 
> other
> +      than the cluster leader.  This ensures that any data that
> +      <code>ovn-isbctl</code> reads and reports is up-to-date.  With
> +      <code>--no-leader-only</code>, <code>ovn-isbctl</code> will use any 
> server
> +      in the cluster, which means that for read-only transactions it can 
> report
> +      and act on stale data (transactions that modify the database are always
> +      serialized even with <code>--no-leader-only</code>).  Refer to
> +      <code>Understanding Cluster Consistency</code> in <code>ovsdb</code>(7)
> +      for more information.
> +    </dd>
> +    </dl>
> +
> +    <h1>Logging options</h1>
> +    <xi:include href="lib/vlog.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +
> +    <h1>Table Formatting Options</h1>
> +    These options control the format of output from the <code>list</code> and
> +    <code>find</code> commands.
> +    <xi:include href="lib/table.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +
> +    <h2>PKI Options</h2>
> +    <p>
> +      PKI configuration is required to use SSL for the connection to the
> +      database.
> +    </p>
> +    <xi:include href="lib/ssl.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +    <xi:include href="lib/ssl-bootstrap.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +
> +    <h2>Other Options</h2>
> +
> +    <xi:include href="lib/common.xml" 
> xmlns:xi="http://www.w3.org/2003/XInclude"/>
> +
> +</manpage>
> diff --git a/utilities/ovn-isbctl.c b/utilities/ovn-isbctl.c
> new file mode 100644
> index 0000000..9ac3a4b
> --- /dev/null
> +++ b/utilities/ovn-isbctl.c
> @@ -0,0 +1,1015 @@
> +/*
> + * Licensed under the Apache License, Version 2.0 (the "License");
> + * you may not use this file except in compliance with the License.
> + * You may obtain a copy of the License at:
> + *
> + *     http://www.apache.org/licenses/LICENSE-2.0
> + *
> + * Unless required by applicable law or agreed to in writing, software
> + * distributed under the License is distributed on an "AS IS" BASIS,
> + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
> + * See the License for the specific language governing permissions and
> + * limitations under the License.
> + */
> +
> +#include <config.h>
> +
> +#include <ctype.h>
> +#include <getopt.h>
> +#include <inttypes.h>
> +#include <stdarg.h>
> +#include <stdlib.h>
> +
> +#include "command-line.h"
> +#include "compiler.h"
> +#include "db-ctl-base.h"
> +#include "dirs.h"
> +#include "fatal-signal.h"
> +#include "openvswitch/dynamic-string.h"
> +#include "openvswitch/json.h"
> +#include "openvswitch/shash.h"
> +#include "openvswitch/vconn.h"
> +#include "openvswitch/vlog.h"
> +#include "lib/ovn-isb-idl.h"
> +#include "lib/ovn-util.h"
> +#include "openvswitch/poll-loop.h"
> +#include "process.h"
> +#include "sset.h"
> +#include "stream-ssl.h"
> +#include "stream.h"
> +#include "table.h"
> +#include "util.h"
> +#include "svec.h"
> +
> +VLOG_DEFINE_THIS_MODULE(isbctl);
> +
> +struct isbctl_context;
> +
> +/* --db: The database server to contact. */
> +static const char *db;
> +
> +/* --oneline: Write each command's output as a single line? */
> +static bool oneline;
> +
> +/* --dry-run: Do not commit any changes. */
> +static bool dry_run;
> +
> +/* --timeout: Time to wait for a connection to 'db'. */
> +static unsigned int timeout;
> +
> +/* Format for table output. */
> +static struct table_style table_style = TABLE_STYLE_DEFAULT;
> +
> +/* The IDL we're using and the current transaction, if any.
> + * This is for use by isbctl_exit() only, to allow it to clean up.
> + * Other code should use its context arguments. */
> +static struct ovsdb_idl *the_idl;
> +static struct ovsdb_idl_txn *the_idl_txn;
> +OVS_NO_RETURN static void isbctl_exit(int status);
> +
> +/* --leader-only, --no-leader-only: Only accept the leader in a cluster. */
> +static int leader_only = true;
> +
> +static void isbctl_cmd_init(void);
> +OVS_NO_RETURN static void usage(void);
> +static void parse_options(int argc, char *argv[], struct shash 
> *local_options);
> +static void run_prerequisites(struct ctl_command[], size_t n_commands,
> +                              struct ovsdb_idl *);
> +static bool do_isbctl(const char *args, struct ctl_command *, size_t n,
> +                     struct ovsdb_idl *);
> +
> +int
> +main(int argc, char *argv[])
> +{
> +    struct ovsdb_idl *idl;
> +    struct ctl_command *commands;
> +    struct shash local_options;
> +    unsigned int seqno;
> +    size_t n_commands;
> +
> +    set_program_name(argv[0]);
> +    fatal_ignore_sigpipe();
> +    vlog_set_levels(NULL, VLF_CONSOLE, VLL_WARN);
> +    vlog_set_levels_from_string_assert("reconnect:warn");
> +
> +    isbctl_cmd_init();
> +
> +    /* Parse command line. */
> +    char *args = process_escape_args(argv);
> +    shash_init(&local_options);
> +    parse_options(argc, argv, &local_options);
> +    char *error = ctl_parse_commands(argc - optind, argv + optind,
> +                                     &local_options, &commands, &n_commands);
> +    if (error) {
> +        ctl_fatal("%s", error);
> +    }
> +    VLOG(ctl_might_write_to_db(commands, n_commands) ? VLL_INFO : VLL_DBG,
> +         "Called as %s", args);
> +
> +    ctl_timeout_setup(timeout);
> +
> +    /* Initialize IDL. */
> +    idl = the_idl = ovsdb_idl_create(db, &isbrec_idl_class, true, false);
> +    ovsdb_idl_set_leader_only(idl, leader_only);
> +    run_prerequisites(commands, n_commands, idl);
> +
> +    /* Execute the commands.
> +     *
> +     * 'seqno' is the database sequence number for which we last tried to
> +     * execute our transaction.  There's no point in trying to commit more 
> than
> +     * once for any given sequence number, because if the transaction fails
> +     * it's because the database changed and we need to obtain an up-to-date
> +     * view of the database before we try the transaction again. */
> +    seqno = ovsdb_idl_get_seqno(idl);
> +    for (;;) {
> +        ovsdb_idl_run(idl);
> +        if (!ovsdb_idl_is_alive(idl)) {
> +            int retval = ovsdb_idl_get_last_error(idl);
> +            ctl_fatal("%s: database connection failed (%s)",
> +                        db, ovs_retval_to_string(retval));
> +        }
> +
> +        if (seqno != ovsdb_idl_get_seqno(idl)) {
> +            seqno = ovsdb_idl_get_seqno(idl);
> +            if (do_isbctl(args, commands, n_commands, idl)) {
> +                free(args);
> +                exit(EXIT_SUCCESS);
> +            }
> +        }
> +
> +        if (seqno == ovsdb_idl_get_seqno(idl)) {
> +            ovsdb_idl_wait(idl);
> +            poll_block();
> +        }
> +    }
> +}
> +
> +static void
> +parse_options(int argc, char *argv[], struct shash *local_options)
> +{
> +    enum {
> +        OPT_DB = UCHAR_MAX + 1,
> +        OPT_ONELINE,
> +        OPT_NO_SYSLOG,
> +        OPT_DRY_RUN,
> +        OPT_LOCAL,
> +        OPT_COMMANDS,
> +        OPT_OPTIONS,
> +        OPT_BOOTSTRAP_CA_CERT,
> +        VLOG_OPTION_ENUMS,
> +        TABLE_OPTION_ENUMS,
> +        SSL_OPTION_ENUMS,
> +    };
> +    static const struct option global_long_options[] = {
> +        {"db", required_argument, NULL, OPT_DB},
> +        {"no-syslog", no_argument, NULL, OPT_NO_SYSLOG},
> +        {"dry-run", no_argument, NULL, OPT_DRY_RUN},
> +        {"oneline", no_argument, NULL, OPT_ONELINE},
> +        {"timeout", required_argument, NULL, 't'},
> +        {"help", no_argument, NULL, 'h'},
> +        {"commands", no_argument, NULL, OPT_COMMANDS},
> +        {"options", no_argument, NULL, OPT_OPTIONS},
> +        {"leader-only", no_argument, &leader_only, true},
> +        {"no-leader-only", no_argument, &leader_only, false},
> +        {"version", no_argument, NULL, 'V'},
> +        VLOG_LONG_OPTIONS,
> +        STREAM_SSL_LONG_OPTIONS,
> +        {"bootstrap-ca-cert", required_argument, NULL, 
> OPT_BOOTSTRAP_CA_CERT},
> +        TABLE_LONG_OPTIONS,
> +        {NULL, 0, NULL, 0},
> +    };
> +    const int n_global_long_options = ARRAY_SIZE(global_long_options) - 1;
> +    char *tmp, *short_options;
> +
> +    struct option *options;
> +    size_t allocated_options;
> +    size_t n_options;
> +    size_t i;
> +
> +    tmp = ovs_cmdl_long_options_to_short_options(global_long_options);
> +    short_options = xasprintf("+%s", tmp);
> +    free(tmp);
> +
> +    /* We want to parse both global and command-specific options here, but
> +     * getopt_long() isn't too convenient for the job.  We copy our global
> +     * options into a dynamic array, then append all of the command-specific
> +     * options. */
> +    options = xmemdup(global_long_options, sizeof global_long_options);
> +    allocated_options = ARRAY_SIZE(global_long_options);
> +    n_options = n_global_long_options;
> +    ctl_add_cmd_options(&options, &n_options, &allocated_options, OPT_LOCAL);
> +
> +    for (;;) {
> +        int idx;
> +        int c;
> +
> +        c = getopt_long(argc, argv, short_options, options, &idx);
> +        if (c == -1) {
> +            break;
> +        }
> +
> +        switch (c) {
> +        case OPT_DB:
> +            db = optarg;
> +            break;
> +
> +        case OPT_ONELINE:
> +            oneline = true;
> +            break;
> +
> +        case OPT_NO_SYSLOG:
> +            vlog_set_levels(&this_module, VLF_SYSLOG, VLL_WARN);
> +            break;
> +
> +        case OPT_DRY_RUN:
> +            dry_run = true;
> +            break;
> +
> +        case OPT_LOCAL:
> +            if (shash_find(local_options, options[idx].name)) {
> +                ctl_fatal("'%s' option specified multiple times",
> +                            options[idx].name);
> +            }
> +            shash_add_nocopy(local_options,
> +                             xasprintf("--%s", options[idx].name),
> +                             nullable_xstrdup(optarg));
> +            break;
> +
> +        case 'h':
> +            usage();
> +
> +        case OPT_COMMANDS:
> +            ctl_print_commands();
> +            /* fall through */
> +
> +        case OPT_OPTIONS:
> +            ctl_print_options(global_long_options);
> +            /* fall through */
> +
> +        case 'V':
> +            ovs_print_version(0, 0);
> +            printf("DB Schema %s\n", isbrec_get_db_version());
> +            exit(EXIT_SUCCESS);
> +
> +        case 't':
> +            if (!str_to_uint(optarg, 10, &timeout) || !timeout) {
> +                ctl_fatal("value %s on -t or --timeout is invalid", optarg);
> +            }
> +            break;
> +
> +        VLOG_OPTION_HANDLERS
> +        TABLE_OPTION_HANDLERS(&table_style)
> +        STREAM_SSL_OPTION_HANDLERS
> +
> +        case OPT_BOOTSTRAP_CA_CERT:
> +            stream_ssl_set_ca_cert_file(optarg, true);
> +            break;
> +
> +        case '?':
> +            exit(EXIT_FAILURE);
> +
> +        default:
> +            ovs_abort(0, "Internal error when parsing option %d.", c);
> +
> +        case 0:
> +            break;
> +        }
> +    }
> +    free(short_options);
> +
> +    if (!db) {
> +        db = default_isb_db();
> +    }
> +
> +    for (i = n_global_long_options; options[i].name; i++) {
> +        free(CONST_CAST(char *, options[i].name));
> +    }
> +    free(options);
> +}
> +
> +static void
> +usage(void)
> +{
> +    printf("\
> +%s: OVN interconnection southbound DB management utility\n\
> +\n\
> +usage: %s [OPTIONS] COMMAND [ARG...]\n\
> +\n\
> +General commands:\n\
> +  show                        print overview of database contents\n\
> +\n\
> +Connection commands:\n\
> +  get-connection             print the connections\n\
> +  del-connection             delete the connections\n\
> +  [--inactivity-probe=MSECS]\n\
> +  set-connection TARGET...   set the list of connections to TARGET...\n\
> +\n\
> +SSL commands:\n\
> +  get-ssl                     print the SSL configuration\n\
> +  del-ssl                     delete the SSL configuration\n\
> +  set-ssl PRIV-KEY CERT CA-CERT [SSL-PROTOS [SSL-CIPHERS]] \
> +set the SSL configuration\n\
> +\n\
> +%s\
> +%s\
> +\n\
> +Options:\n\
> +  --db=DATABASE               connect to DATABASE\n\
> +                              (default: %s)\n\
> +  --no-leader-only            accept any cluster member, not just the 
> leader\n\
> +  -t, --timeout=SECS          wait at most SECS seconds\n\
> +  --dry-run                   do not commit changes to database\n\
> +  --oneline                   print exactly one line of output per 
> command\n",
> +           program_name, program_name, ctl_get_db_cmd_usage(),
> +           ctl_list_db_tables_usage(), default_isb_db());
> +    table_usage();
> +    vlog_usage();
> +    printf("\
> +  --no-syslog             equivalent to --verbose=isbctl:syslog:warn\n");
> +    printf("\n\
> +Other options:\n\
> +  -h, --help                  display this help message\n\
> +  -V, --version               display version information\n");
> +    stream_usage("database", true, true, true);
> +    exit(EXIT_SUCCESS);
> +}
> +
> +
> +/* ovs-isbctl specific context.  Inherits the 'struct ctl_context' as base.
> + * Now empty, just keep the framework for future additions. */
> +struct isbctl_context {
> +    struct ctl_context base;
> +
> +    /* A cache of the contents of the database.
> +     *
> +     * A command that needs to use any of this information must first call
> +     * isbctl_context_populate_cache().  A command that changes anything that
> +     * could invalidate the cache must either call
> +     * isbctl_context_invalidate_cache() or manually update the cache to
> +     * maintain its correctness. */
> +    bool cache_valid;
> +};
> +
> +static void
> +isbctl_init(struct ctl_context *ctx OVS_UNUSED)
> +{
> +}
> +
> +static char *
> +az_by_name_or_uuid(struct ctl_context *ctx, const char *id, bool must_exist,
> +                   const struct isbrec_availability_zone **az_p)
> +{
> +    const struct isbrec_availability_zone *az = NULL;
> +    *az_p = NULL;
> +
> +    struct uuid az_uuid;
> +    bool is_uuid = uuid_from_string(&az_uuid, id);
> +    if (is_uuid) {
> +        az = isbrec_availability_zone_get_for_uuid(ctx->idl, &az_uuid);
> +    }
> +
> +    if (!az) {
> +        const struct isbrec_availability_zone *iter;
> +
> +        ISBREC_AVAILABILITY_ZONE_FOR_EACH (iter, ctx->idl) {
> +            if (!strcmp(iter->name, id)) {
> +                az = iter;
> +                break;
> +            }
> +        }
> +    }
> +
> +    if (!az && must_exist) {
> +        return xasprintf("%s: availability zone %s not found",
> +                         id, is_uuid ? "UUID" : "name");
> +    }
> +
> +    *az_p = az;
> +    return NULL;
> +}
> +
> +/* Data structures for the show command, which constructs the hierarchy
> + * of availability_zone:gateway:port_binding. */
> +struct gw_data {
> +    const struct isbrec_gateway *isb_gw;
> +    /* With node type struct isbrec_port_binding.
> +     * We don't need to search port-binding, but using shash makes
> +     * sorting convenient. */
> +    struct shash pbs;
> +};
> +
> +struct az_data {
> +    const struct isbrec_availability_zone *isb_az;
> +    /* With node type struct gw_data */
> +    struct shash gws;
> +};
> +
> +static void
> +init_az_info(struct ctl_context *ctx, struct shash *azs)
> +{
> +    const struct isbrec_availability_zone *az;
> +    ISBREC_AVAILABILITY_ZONE_FOR_EACH (az, ctx->idl) {
> +        struct az_data *az_data = xmalloc(sizeof *az_data);
> +        shash_init(&az_data->gws);
> +        az_data->isb_az = az;
> +        shash_add(azs, az->name, az_data);
> +    }
> +
> +    const struct isbrec_gateway *gw;
> +    ISBREC_GATEWAY_FOR_EACH (gw, ctx->idl) {
> +        struct az_data *az_data = shash_find_data(azs,
> +                                                  
> gw->availability_zone->name);
> +        ovs_assert(az_data);
> +        struct gw_data *gw_data = xmalloc(sizeof *gw_data);
> +        gw_data->isb_gw = gw;
> +        shash_init(&gw_data->pbs);
> +        shash_add(&az_data->gws, gw->name, gw_data);
> +    }
> +
> +    const struct isbrec_port_binding *pb;
> +    ISBREC_PORT_BINDING_FOR_EACH (pb, ctx->idl) {
> +        struct az_data *az_data = shash_find_data(azs,
> +                                                  
> pb->availability_zone->name);
> +        ovs_assert(az_data);
> +        struct gw_data *gw_data = shash_find_data(&az_data->gws, 
> pb->gateway);
> +        if (!gw_data) {
> +            continue;
> +        }
> +        shash_add(&gw_data->pbs, pb->logical_port, pb);
> +    }
> +}
> +
> +static void
> +destroy_az_info(struct shash *azs)
> +{
> +    struct shash_node *az_node;
> +    SHASH_FOR_EACH (az_node, azs) {
> +        struct az_data *az_data = az_node->data;
> +        struct shash_node *gw_node;
> +        SHASH_FOR_EACH (gw_node, &az_data->gws) {
> +            struct gw_data *gw_data = gw_node->data;
> +            shash_destroy(&gw_data->pbs);
> +            free(gw_data);
> +        }
> +        shash_destroy(&az_data->gws);
> +        free(az_data);
> +    }
> +    shash_destroy(azs);
> +}
> +
> +static void
> +print_az(struct az_data *az, struct ds *s)
> +{
> +    ds_put_format(s, "availability-zone %s\n", az->isb_az->name);
> +
> +    const struct shash_node **nodes = shash_sort(&az->gws);
> +    for (int g = 0; g < shash_count(&az->gws); g++) {
> +        struct gw_data *gw = nodes[g]->data;
> +
> +        ds_put_format(s, "    gateway %s\n", gw->isb_gw->name);
> +        if (gw->isb_gw->hostname[0]) {
> +            ds_put_format(s, "        hostname: %s\n", gw->isb_gw->hostname);
> +        }
> +
> +        for (int i = 0; i < gw->isb_gw->n_encaps; i++) {
> +            ds_put_format(s, "        type: %s\n",
> +                          gw->isb_gw->encaps[i]->type);
> +            ds_put_format(s, "            ip: %s\n",
> +                          gw->isb_gw->encaps[i]->ip);
> +        }
> +
> +        const struct shash_node **pb_nodes = shash_sort(&gw->pbs);
> +        for (int p = 0; p < shash_count(&gw->pbs); p++) {
> +            const struct isbrec_port_binding *pb = pb_nodes[p]->data;
> +            ds_put_format(s, "        port %s\n",
> +                          pb->logical_port);
> +            ds_put_format(s, "            transit switch: %s\n",
> +                          pb->transit_switch);
> +            ds_put_format(s, "            address: [\"%s\"]\n",
> +                          pb->address);
> +        }
> +        free(pb_nodes);
> +    }
> +    free(nodes);
> +}
> +
> +static void
> +isbctl_show(struct ctl_context *ctx)
> +{
> +    /* Availability zones with the gateways and port-bindings data. Node
> +     * type is struct az_data. */
> +    struct shash azs = SHASH_INITIALIZER(&azs);
> +    init_az_info(ctx, &azs);
> +
> +    const struct isbrec_availability_zone *az;
> +
> +    if (ctx->argc == 2) {
> +        char *error = az_by_name_or_uuid(ctx, ctx->argv[1], false, &az);
> +        if (error) {
> +            ctx->error = error;
> +            goto error;
> +        }
> +        if (az) {
> +            struct az_data *az_data = shash_find_data(&azs, az->name);
> +            ovs_assert(az_data);
> +            print_az(az_data, &ctx->output);
> +        }
> +    } else {
> +        const struct shash_node **nodes = shash_sort(&azs);
> +        for (int i = 0; i < shash_count(&azs); i++) {
> +            struct az_data *az_data = nodes[i]->data;
> +            print_az(az_data, &ctx->output);
> +        }
> +        free(nodes);
> +    }
> +
> +error:
> +    destroy_az_info(&azs);
> +}
> +
> +static void
> +verify_connections(struct ctl_context *ctx)
> +{
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    const struct isbrec_connection *conn;
> +
> +    isbrec_isb_global_verify_connections(isb_global);
> +
> +    ISBREC_CONNECTION_FOR_EACH (conn, ctx->idl) {
> +        isbrec_connection_verify_target(conn);
> +    }
> +}
> +
> +static void
> +pre_connection(struct ctl_context *ctx)
> +{
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_isb_global_col_connections);
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_connection_col_target);
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_connection_col_inactivity_probe);
> +}
> +
> +static void
> +cmd_get_connection(struct ctl_context *ctx)
> +{
> +    const struct isbrec_connection *conn;
> +    struct svec targets;
> +    size_t i;
> +
> +    verify_connections(ctx);
> +
> +    /* Print the targets in sorted order for reproducibility. */
> +    svec_init(&targets);
> +
> +    ISBREC_CONNECTION_FOR_EACH (conn, ctx->idl) {
> +        svec_add(&targets, conn->target);
> +    }
> +
> +    svec_sort_unique(&targets);
> +    for (i = 0; i < targets.n; i++) {
> +        ds_put_format(&ctx->output, "%s\n", targets.names[i]);
> +    }
> +    svec_destroy(&targets);
> +}
> +
> +static void
> +delete_connections(struct ctl_context *ctx)
> +{
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    const struct isbrec_connection *conn, *next;
> +
> +    /* Delete Manager rows pointed to by 'connection_options' column. */
> +    ISBREC_CONNECTION_FOR_EACH_SAFE (conn, next, ctx->idl) {
> +        isbrec_connection_delete(conn);
> +    }
> +
> +    /* Delete 'Manager' row refs in 'manager_options' column. */
> +    isbrec_isb_global_set_connections(isb_global, NULL, 0);
> +}
> +
> +static void
> +cmd_del_connection(struct ctl_context *ctx)
> +{
> +    verify_connections(ctx);
> +    delete_connections(ctx);
> +}
> +
> +static void
> +insert_connections(struct ctl_context *ctx, char *targets[], size_t n)
> +{
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    struct isbrec_connection **connections;
> +    size_t i, conns = 0;
> +    const char *inactivity_probe = shash_find_data(&ctx->options,
> +                                                   "--inactivity-probe");
> +
> +    /* Insert each connection in a new row in Connection table. */
> +    connections = xmalloc(n * sizeof *connections);
> +    for (i = 0; i < n; i++) {
> +        if (stream_verify_name(targets[i]) &&
> +                   pstream_verify_name(targets[i])) {
> +            VLOG_WARN("target type \"%s\" is possibly erroneous", 
> targets[i]);
> +        }
> +
> +        connections[conns] = isbrec_connection_insert(ctx->txn);
> +        isbrec_connection_set_target(connections[conns], targets[i]);
> +        if (inactivity_probe) {
> +            int64_t msecs = atoll(inactivity_probe);
> +            isbrec_connection_set_inactivity_probe(connections[conns],
> +                                                  &msecs, 1);
> +        }
> +        conns++;
> +    }
> +
> +    /* Store uuids of new connection rows in 'connection' column. */
> +    isbrec_isb_global_set_connections(isb_global, connections, conns);
> +    free(connections);
> +}
> +
> +static void
> +cmd_set_connection(struct ctl_context *ctx)
> +{
> +    const size_t n = ctx->argc - 1;
> +
> +    verify_connections(ctx);
> +    delete_connections(ctx);
> +    insert_connections(ctx, &ctx->argv[1], n);
> +}
> +
> +static void
> +pre_cmd_get_ssl(struct ctl_context *ctx)
> +{
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_isb_global_col_ssl);
> +
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_ssl_col_private_key);
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_ssl_col_certificate);
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_ssl_col_ca_cert);
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_ssl_col_bootstrap_ca_cert);
> +}
> +
> +static void
> +cmd_get_ssl(struct ctl_context *ctx)
> +{
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    const struct isbrec_ssl *ssl = isbrec_ssl_first(ctx->idl);
> +
> +    isbrec_isb_global_verify_ssl(isb_global);
> +    if (ssl) {
> +        isbrec_ssl_verify_private_key(ssl);
> +        isbrec_ssl_verify_certificate(ssl);
> +        isbrec_ssl_verify_ca_cert(ssl);
> +        isbrec_ssl_verify_bootstrap_ca_cert(ssl);
> +
> +        ds_put_format(&ctx->output, "Private key: %s\n", ssl->private_key);
> +        ds_put_format(&ctx->output, "Certificate: %s\n", ssl->certificate);
> +        ds_put_format(&ctx->output, "CA Certificate: %s\n", ssl->ca_cert);
> +        ds_put_format(&ctx->output, "Bootstrap: %s\n",
> +                ssl->bootstrap_ca_cert ? "true" : "false");
> +    }
> +}
> +
> +static void
> +pre_cmd_del_ssl(struct ctl_context *ctx)
> +{
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_isb_global_col_ssl);
> +}
> +
> +static void
> +cmd_del_ssl(struct ctl_context *ctx)
> +{
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    const struct isbrec_ssl *ssl = isbrec_ssl_first(ctx->idl);
> +
> +    if (ssl) {
> +        isbrec_isb_global_verify_ssl(isb_global);
> +        isbrec_ssl_delete(ssl);
> +        isbrec_isb_global_set_ssl(isb_global, NULL);
> +    }
> +}
> +
> +static void
> +pre_cmd_set_ssl(struct ctl_context *ctx)
> +{
> +    ovsdb_idl_add_column(ctx->idl, &isbrec_isb_global_col_ssl);
> +}
> +
> +static void
> +cmd_set_ssl(struct ctl_context *ctx)
> +{
> +    bool bootstrap = shash_find(&ctx->options, "--bootstrap");
> +    const struct isbrec_isb_global *isb_global =
> +        isbrec_isb_global_first(ctx->idl);
> +    const struct isbrec_ssl *ssl = isbrec_ssl_first(ctx->idl);
> +
> +    isbrec_isb_global_verify_ssl(isb_global);
> +    if (ssl) {
> +        isbrec_ssl_delete(ssl);
> +    }
> +    ssl = isbrec_ssl_insert(ctx->txn);
> +
> +    isbrec_ssl_set_private_key(ssl, ctx->argv[1]);
> +    isbrec_ssl_set_certificate(ssl, ctx->argv[2]);
> +    isbrec_ssl_set_ca_cert(ssl, ctx->argv[3]);
> +
> +    isbrec_ssl_set_bootstrap_ca_cert(ssl, bootstrap);
> +
> +    if (ctx->argc == 5) {
> +        isbrec_ssl_set_ssl_protocols(ssl, ctx->argv[4]);
> +    } else if (ctx->argc == 6) {
> +        isbrec_ssl_set_ssl_protocols(ssl, ctx->argv[4]);
> +        isbrec_ssl_set_ssl_ciphers(ssl, ctx->argv[5]);
> +    }
> +
> +    isbrec_isb_global_set_ssl(isb_global, ssl);
> +}
> +
> +
> +static const struct ctl_table_class tables[ISBREC_N_TABLES] = {
> +    [ISBREC_TABLE_AVAILABILITY_ZONE].row_ids[0] =
> +    {&isbrec_availability_zone_col_name, NULL, NULL},
> +
> +    [ISBREC_TABLE_GATEWAY].row_ids[0] =
> +    {&isbrec_gateway_col_name, NULL, NULL},
> +
> +    [ISBREC_TABLE_PORT_BINDING].row_ids[0] =
> +    {&isbrec_port_binding_col_logical_port, NULL, NULL},
> +
> +    [ISBREC_TABLE_DATAPATH_BINDING].row_ids[0] =
> +    {&isbrec_datapath_binding_col_transit_switch, NULL, NULL},
> +};
> +
> +
> +static void
> +isbctl_context_init_command(struct isbctl_context *isbctl_ctx,
> +                           struct ctl_command *command)
> +{
> +    ctl_context_init_command(&isbctl_ctx->base, command);
> +}
> +
> +static void
> +isbctl_context_init(struct isbctl_context *isbctl_ctx,
> +                   struct ctl_command *command, struct ovsdb_idl *idl,
> +                   struct ovsdb_idl_txn *txn,
> +                   struct ovsdb_symbol_table *symtab)
> +{
> +    ctl_context_init(&isbctl_ctx->base, command, idl, txn, symtab, NULL);
> +    isbctl_ctx->cache_valid = false;
> +}
> +
> +static void
> +isbctl_context_done_command(struct isbctl_context *isbctl_ctx,
> +                           struct ctl_command *command)
> +{
> +    ctl_context_done_command(&isbctl_ctx->base, command);
> +}
> +
> +static void
> +isbctl_context_done(struct isbctl_context *isbctl_ctx,
> +                   struct ctl_command *command)
> +{
> +    ctl_context_done(&isbctl_ctx->base, command);
> +}
> +
> +static void
> +run_prerequisites(struct ctl_command *commands, size_t n_commands,
> +                  struct ovsdb_idl *idl)
> +{
> +    ovsdb_idl_add_table(idl, &isbrec_table_isb_global);
> +
> +    for (struct ctl_command *c = commands; c < &commands[n_commands]; c++) {
> +        if (c->syntax->prerequisites) {
> +            struct isbctl_context isbctl_ctx;
> +
> +            ds_init(&c->output);
> +            c->table = NULL;
> +
> +            isbctl_context_init(&isbctl_ctx, c, idl, NULL, NULL);
> +            (c->syntax->prerequisites)(&isbctl_ctx.base);
> +            if (isbctl_ctx.base.error) {
> +                ctl_fatal("%s", isbctl_ctx.base.error);
> +            }
> +            isbctl_context_done(&isbctl_ctx, c);
> +
> +            ovs_assert(!c->output.string);
> +            ovs_assert(!c->table);
> +        }
> +    }
> +}
> +
> +static bool
> +do_isbctl(const char *args, struct ctl_command *commands, size_t n_commands,
> +         struct ovsdb_idl *idl)
> +{
> +    struct ovsdb_idl_txn *txn;
> +    enum ovsdb_idl_txn_status status;
> +    struct ovsdb_symbol_table *symtab;
> +    struct isbctl_context isbctl_ctx;
> +    struct ctl_command *c;
> +    struct shash_node *node;
> +
> +    txn = the_idl_txn = ovsdb_idl_txn_create(idl);
> +    if (dry_run) {
> +        ovsdb_idl_txn_set_dry_run(txn);
> +    }
> +
> +    ovsdb_idl_txn_add_comment(txn, "ovs-isbctl: %s", args);
> +
> +    const struct isbrec_isb_global *isb = isbrec_isb_global_first(idl);
> +    if (!isb) {
> +        /* XXX add verification that table is empty */
> +        isbrec_isb_global_insert(txn);
> +    }
> +
> +    symtab = ovsdb_symbol_table_create();
> +    for (c = commands; c < &commands[n_commands]; c++) {
> +        ds_init(&c->output);
> +        c->table = NULL;
> +    }
> +    isbctl_context_init(&isbctl_ctx, NULL, idl, txn, symtab);
> +    for (c = commands; c < &commands[n_commands]; c++) {
> +        isbctl_context_init_command(&isbctl_ctx, c);
> +        if (c->syntax->run) {
> +            (c->syntax->run)(&isbctl_ctx.base);
> +        }
> +        if (isbctl_ctx.base.error) {
> +            ctl_fatal("%s", isbctl_ctx.base.error);
> +        }
> +        isbctl_context_done_command(&isbctl_ctx, c);
> +
> +        if (isbctl_ctx.base.try_again) {
> +            isbctl_context_done(&isbctl_ctx, NULL);
> +            goto try_again;
> +        }
> +    }
> +    isbctl_context_done(&isbctl_ctx, NULL);
> +
> +    SHASH_FOR_EACH (node, &symtab->sh) {
> +        struct ovsdb_symbol *symbol = node->data;
> +        if (!symbol->created) {
> +            ctl_fatal("row id \"%s\" is referenced but never created (e.g. "
> +                      "with \"-- --id=%s create ...\")",
> +                      node->name, node->name);
> +        }
> +        if (!symbol->strong_ref) {
> +            if (!symbol->weak_ref) {
> +                VLOG_WARN("row id \"%s\" was created but no reference to it "
> +                          "was inserted, so it will not actually appear in "
> +                          "the database", node->name);
> +            } else {
> +                VLOG_WARN("row id \"%s\" was created but only a weak "
> +                          "reference to it was inserted, so it will not "
> +                          "actually appear in the database", node->name);
> +            }
> +        }
> +    }
> +
> +    status = ovsdb_idl_txn_commit_block(txn);
> +    if (status == TXN_UNCHANGED || status == TXN_SUCCESS) {
> +        for (c = commands; c < &commands[n_commands]; c++) {
> +            if (c->syntax->postprocess) {
> +                isbctl_context_init(&isbctl_ctx, c, idl, txn, symtab);
> +                (c->syntax->postprocess)(&isbctl_ctx.base);
> +                if (isbctl_ctx.base.error) {
> +                    ctl_fatal("%s", isbctl_ctx.base.error);
> +                }
> +                isbctl_context_done(&isbctl_ctx, c);
> +            }
> +        }
> +    }
> +
> +    switch (status) {
> +    case TXN_UNCOMMITTED:
> +    case TXN_INCOMPLETE:
> +        OVS_NOT_REACHED();
> +
> +    case TXN_ABORTED:
> +        /* Should not happen--we never call ovsdb_idl_txn_abort(). */
> +        ctl_fatal("transaction aborted");
> +
> +    case TXN_UNCHANGED:
> +    case TXN_SUCCESS:
> +        break;
> +
> +    case TXN_TRY_AGAIN:
> +        goto try_again;
> +
> +    case TXN_ERROR:
> +        ctl_fatal("transaction error: %s", ovsdb_idl_txn_get_error(txn));
> +
> +    case TXN_NOT_LOCKED:
> +        /* Should not happen--we never call ovsdb_idl_set_lock(). */
> +        ctl_fatal("database not locked");
> +
> +    default:
> +        OVS_NOT_REACHED();
> +    }
> +
> +    ovsdb_symbol_table_destroy(symtab);
> +
> +    for (c = commands; c < &commands[n_commands]; c++) {
> +        struct ds *ds = &c->output;
> +
> +        if (c->table) {
> +            table_print(c->table, &table_style);
> +        } else if (oneline) {
> +            size_t j;
> +
> +            ds_chomp(ds, '\n');
> +            for (j = 0; j < ds->length; j++) {
> +                int ch = ds->string[j];
> +                switch (ch) {
> +                case '\n':
> +                    fputs("\\n", stdout);
> +                    break;
> +
> +                case '\\':
> +                    fputs("\\\\", stdout);
> +                    break;
> +
> +                default:
> +                    putchar(ch);
> +                }
> +            }
> +            putchar('\n');
> +        } else {
> +            fputs(ds_cstr(ds), stdout);
> +        }
> +        ds_destroy(&c->output);
> +        table_destroy(c->table);
> +        free(c->table);
> +
> +        shash_destroy_free_data(&c->options);
> +    }
> +    free(commands);
> +    ovsdb_idl_txn_destroy(txn);
> +    ovsdb_idl_destroy(idl);
> +
> +    return true;
> +
> +try_again:
> +    /* Our transaction needs to be rerun, or a prerequisite was not met.  
> Free
> +     * resources and return so that the caller can try again. */
> +    ovsdb_idl_txn_abort(txn);
> +    ovsdb_idl_txn_destroy(txn);
> +    the_idl_txn = NULL;
> +
> +    ovsdb_symbol_table_destroy(symtab);
> +    for (c = commands; c < &commands[n_commands]; c++) {
> +        ds_destroy(&c->output);
> +        table_destroy(c->table);
> +        free(c->table);
> +    }
> +    return false;
> +}
> +
> +/* Frees the current transaction and the underlying IDL and then calls
> + * exit(status).
> + *
> + * Freeing the transaction and the IDL is not strictly necessary, but it 
> makes
> + * for a clean memory leak report from valgrind in the normal case.  That 
> makes
> + * it easier to notice real memory leaks. */
> +static void
> +isbctl_exit(int status)
> +{
> +    if (the_idl_txn) {
> +        ovsdb_idl_txn_abort(the_idl_txn);
> +        ovsdb_idl_txn_destroy(the_idl_txn);
> +    }
> +    ovsdb_idl_destroy(the_idl);
> +    exit(status);
> +}
> +
> +static const struct ctl_command_syntax isbctl_commands[] = {
> +    { "init", 0, 0, "", NULL, isbctl_init, NULL, "", RW },
> +    { "show", 0, 1, "[AZ]", NULL, isbctl_show, NULL, "", RO },
> +
> +    /* Connection commands. */
> +    {"get-connection", 0, 0, "", pre_connection, cmd_get_connection, NULL, 
> "",
> +        RO},
> +    {"del-connection", 0, 0, "", pre_connection, cmd_del_connection, NULL, 
> "",
> +        RW},
> +    {"set-connection", 1, INT_MAX, "TARGET...", pre_connection,
> +        cmd_set_connection, NULL, "--inactivity-probe=", RW},
> +
> +    /* SSL commands. */
> +    {"get-ssl", 0, 0, "", pre_cmd_get_ssl, cmd_get_ssl, NULL, "", RO},
> +    {"del-ssl", 0, 0, "", pre_cmd_del_ssl, cmd_del_ssl, NULL, "", RW},
> +    {"set-ssl", 3, 5,
> +        "PRIVATE-KEY CERTIFICATE CA-CERT [SSL-PROTOS [SSL-CIPHERS]]",
> +        pre_cmd_set_ssl, cmd_set_ssl, NULL, "--bootstrap", RW},
> +
> +    {NULL, 0, 0, NULL, NULL, NULL, NULL, NULL, RO},
> +};
> +
> +/* Registers isbctl and common db commands. */
> +static void
> +isbctl_cmd_init(void)
> +{
> +    ctl_init(&isbrec_idl_class, isbrec_table_classes, tables,
> +             NULL, isbctl_exit);
> +    ctl_register_commands(isbctl_commands);
> +}

> --
> 2.1.0
>
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